<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
  <!-- &lt;!&ndash; <style type="text/css">
        tr:nth-child(even){
            background-color: grey;
        }
        tr:nth-child(odd){
            background-color: white;
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        tr:hover{
            background-color: yellow;
        }
        table{
            width: 300px;
            height: 400px;
            border: 1px solid black;
            border-collapse: collapse;
        }
        tr,td{
            border: 1px solid black;
        }&ndash;&gt;
    </style>-->
</head>
<body>
   <!-- <table>
        <tr>
            <td></td>
        </tr>
        <tr>
            <td></td>
        </tr>
        <tr>
            <td></td>
        </tr>
        <tr>
            <td></td>
        </tr>
        <tr>
            <td></td>
        </tr>
    </table>-->
    <script>
        function sum() {
            for(var i=0;i<arguments.length;i++){
             if(arguments[i])
            }
        }
        sum()
    </script>
</body>
</html>